[robrenaud]

Excepting declaring funky things like arrays of pointers to functions in C, what competent developer doesn't know the syntax to his or her own best 2 or 3 languages?

There is a difference between forgetting to put a semicolon at the end of a line (totally harmless on a whiteboard interview), and not knowing that semicolons end statements in C.

Of course, not knowing say, part of the standard library, say the semantics of rand(), without a man page or Google search is much more excusable.